diff --git a/doc/intro.txt b/doc/intro.txt
index 01244284..43c894e2 100644
--- a/doc/intro.txt
+++ b/doc/intro.txt
@@ -82,6 +82,7 @@ CCFlatHashtbl
 CCGraph
 CCHashSet
 CCHashTrie
+CCHet
 CCImmutArray
 CCIntMap
 CCMixmap